ProgramNode(0...10)(
  [:a],
  StatementsNode(0...10)(
    [MultiWriteNode(0...10)(
       [LocalVariableWriteNode(0...1)(:a, 0, nil, (0...1), nil),
        CallNode(3...6)(
          CallNode(3...4)(nil, nil, (3...4), nil, nil, nil, nil, 0, "b"),
          (4...5),
          (5...6),
          nil,
          nil,
          nil,
          nil,
          0,
          "C="
        )],
       (7...8),
       CallNode(9...10)(nil, nil, (9...10), nil, nil, nil, nil, 0, "d"),
       nil,
       nil
     )]
  )
)
